138977383 has 2 divisors, whose sum is σ = 138977384. Its totient is φ = 138977382.

The previous prime is 138977369. The next prime is 138977387. The reversal of 138977383 is 383779831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138977383 - 2²⁵ = 105422951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138977387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69488691 + 69488692.

It is an arithmetic number, because the mean of its divisors is an integer number (69488692).

Almost surely, 2^138977383 is an apocalyptic number.

138977383 is a deficient number, since it is larger than the sum of its proper divisors (1).

138977383 is an equidigital number, since it uses as much as digits as its factorization.

138977383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 49.

The square root of 138977383 is about 11788.8669090799. The cubic root of 138977383 is about 517.9820496853.

The spelling of 138977383 in words is "one hundred thirty-eight million, nine hundred seventy-seven thousand, three hundred eighty-three".